Warp knitting machines



July 17, 1962 Filed Jan. 12, 1960 w. LIEBCHEN 3,044,283

WARP KNITTING MACHINES 2 Sheets-Sheet 1 wmvro W/wzM/w 0550/5 g/m/zb July17, 1962 w. LIEBCHEN 3,044,233

WARP KNITTING MACHINES Filed Jan. 12, 1960 2 Sheets-Sheet 2 lNl/E/VTUR VAL DEA 1,4,? [/EBCHAW 1 it J This invention relates to a warp knittingmachine and more particularly to a fiat bed Warp knitting machine, forproducing patterned warp knitted fabrics, comprising a plurality ofpattern guide bars with detachable guides.

In known knitting machines of this kind the guides are secured to thesides of the guide bars. This has the disadvantage that whenever it isnecessary to replace a guide, for instance a guide which has broken, allthe guide bars in front of the particular guide bar which carries thebroken guide must be removed before access to the broken guide isobtained.

According to the invention this drawback is overcome by locating thepoint of fixation of the guide shanks on the top of the pattern guidebars. In this form of construction each guide can be individuallydetached by loosening its fixing screw and withdrawing it upwards fromthe assembly, the dismounting of guide bars from the hangers beingunnecessary.

In a preferred form of construction according to the invention eachguide shank has an ofi-angled and slotted upper end which extends overthe top of the respective pattern guide bar.

Conveniently the top face of the pattern guide bar and the upperofi-angled end of the guide shank may form an angle of more than 90 withthe rest of the guide shank.

An illustrative embodiment of the invention will be described in greaterdetail with reference to the accompanying drawings in which:

FIG. 1 is a transverse section of a hanger assembly according to theinvention, I

FIG. 2 is a transverse section of two neighboring guide bars withguides, and

FIG. 3 is a side elevation of guide bar and guide corresponding withFIG. 2.

The hanger assembly 'of a flat bed warp knitting machine, such as aRaschel machine, is equipped for instance with three foundation guidebars 1, 2 and 3 and twenty pattern guide bars 4 to 23 (FIG. 1). Thehanger assembly comprises a hanger 28 mounted on rocking shaft 24adapted to impart a swinging motion to the right and 2 left as well as ahorizontal shogging motion to the assembly. The pattern guide bars 4 to23 which carry guides 27 are longitudinally guided in members 26 securedto the hanger 28.

Each guide 27 is mounted in a flat shank 25. At its upper end the shankhas a lateral extension 29 with a slot 30 for engagement by a fixingscrew 33 (FIG. 3). The shanks 25 extend to the top of the downwardlytapering cross section of the guide bars 4 to 23 which have top faces 31with a downward slope (FIG. 2). The upper end 25a of each guide shank 25and its extension 29 are bent over sideways in such manner that the bentend 25a will bearflush on the sloping face 31 of .the top of the guidebar.

The slot '30 for the reception of the fixing screw 33 in extension 29 ofthe guide shank 25 is therefore in a position in which it is accessiblefrom above and the threaded shank of the screw 33 can be inserted intothe slot, screwed into the threads of the hole in the upper face of thepattern guide bar, and tightened.

It is to be understood, of course, that the invention should not belimited to the embodiment described herein,

since modifications may be made within the scope of the claims.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is:

1. In a flat bed warp knitting machine for producing patterned warpknitted fabrics and having a plurality of pattern guide bars arranged ina bank in side-by-side relation, the improvement which comprises, aplurality of guides, shanks connected to the guides, each of the patternbars having an elongated side provided with an included face exposedoutwardly of the bank, each of the shanks extending along said side of arespective one of the bars and having an end bent to overlie the exposedface of that pattern bar, and means passing through the bent ends of theshanks into the underlying bars normal to the exposed faces of the barsto fix the shanks to the bars.

2. In a flat bed warp knitting machine as claimed in claim 1, whereinthe bent ends of the shanks are slotted, and the means fixing the shanksto the bars are screws.

References Cited in the file of this patent UNITED STATES PATENTS2,859,602 Porsche Nov. 11, 1958 FOREIGN PATENTS 457,359 France July 9,1913 162,688 Great Britain May 12, 1921

